Electrolyte/electrode interfacial electrochemical behaviors and optimization strategies in aqueous zinc-ion batteries

Energy storage materials, Год журнала: 2021, Номер 45, С. 618 - 646

Опубликована: Дек. 12, 2021

Язык: Английский

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Potassium Ammonium Vanadate with Rich Oxygen Vacancies for Fast and Highly Stable Zn-Ion Storage

ACS Nano, Год журнала: 2022, Номер 16(3), С. 4588 - 4598

Опубликована: Март 8, 2022

Vanadium-based materials have been extensively studied as promising cathode for zinc-ion batteries because of their multiple valences and adjustable ion-diffusion channels. However, the sluggish kinetics Zn-ion intercalation less stable layered structure remain bottlenecks that limit further development. The present work introduces potassium ions to partially substitute ammonium in vanadate, leading a subtle shrinkage lattice distance increased oxygen vacancies. resulting vanadate exhibits high discharge capacity (464 mAh g-1 at 0.1 A g-1) excellent cycling stability (90% retention over 3000 cycles 5 g-1). electrochemical properties battery performances are attributed rich introduction K+ replace NH4+ appears alleviate irreversible deammoniation prevent structural collapse during ion insertion/extraction. Density functional theory calculations show has modulated electron better diffusion path with lower migration barrier.

Язык: Английский

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A High Performing Zn‐Ion Battery Cathode Enabled by In Situ Transformation of V₂O₅ Atomic Layers

Angewandte Chemie International Edition, Год журнала: 2020, Номер 59(39), С. 17004 - 17011

Опубликована: Июнь 22, 2020

Developing high capacity and stable cathodes is a key to successful commercialization of aqueous Zn-ion batteries (ZIBs). Pure layered V2 O5 has theoretical (585 mAh g-1 ), but it suffers severe decay. Pre-inserting cations into can substantially stabilize the performance, at an expense lowered capacity. Here we show that atomic layer deposition derived be excellent ZIB cathode with exceptional cycle stability once. We report rapid in situ on-site transformation layers Zn3 O7 (OH)2 ⋅2 H2 O (ZVO) nanoflake clusters, also known proton intercalatable material. High concentration reactive sites, strong bonding conductive substrate, nanosized thickness binder-free composition facilitate ionic transport promote best utilization active provide new insights -dissolution mechanisms for different Zn-salt electrolytes their implications stability.

Язык: Английский

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Functionalized Separator Strategies toward Advanced Aqueous Zinc‐Ion Batteries

Advanced Energy Materials, Год журнала: 2023, Номер 13(20)

Опубликована: Апрель 7, 2023

Abstract Aqueous zinc‐ion batteries (ZIBs) enjoy a good reputation for being safe, affordable to produce, and ecologically friendly due the use of water‐based electrolytes. The main factors restricting development ZIBs, however, are negative effects dendrite deposition on zinc anode dissolution common cathodes such as Mn V‐based cathodes. Various techniques have been used address these issues, including regulating electrolyte concentration or solvation structure, developing coating current collector lessen growth, improving structural stability cathode. Recently, functionalized separator strategies gained popularity effective ways improve ZIB performance. is also practical technique save costs increase volumetric energy density battery by substituting usual thick expensive glass fiber separator. separators in ZIBs subject ongoing research, this work presents most recent findings systematic manner, focusing both methods prepare modify them. Finally, brief explanation constraints future potential provided.

Язык: Английский

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Ultra‐Stable Aqueous Zinc Batteries Enabled by β‐Cyclodextrin: Preferred Zinc Deposition and Suppressed Parasitic Reactions

Advanced Functional Materials, Год журнала: 2022, Номер 32(47)

Опубликована: Сен. 14, 2022

Abstract The intrinsic zinc dendrite growth aggravated by the uneven electric field at Zn anode surface and water‐induced parasitic reactions have largely impeded rechargeable aqueous zinc‐ion batteries for practical applications in large‐scale energy storage. Here, an effective strategy is proposed to manipulate deposition simultaneously prevent generation of insulating by‐products (Zn 4 SO (OH) 6 ·xH 2 O) improved plating/stripping on anodes addition a nontoxic electrolyte additive, β‐cyclodextrin (β‐CD). simulation results indicate that β‐CD molecules prefer adsorb horizontally (002) plane, regulating diffusion pathways sites 2+ preferred along plane without formation inhibiting H O facilitating desolvation [Zn(H ] . Consequently, ultra‐long stable cycling up 1700 h high current density mA cm −2 can be achieved β‐CD, 17 times pure ZnSO remarkable stability also maintained under harsh test condition (40 , 20 mAh ). This study highlights important role engineering interfacial during high‐performing batteries.

Язык: Английский

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An Anode-Free Zn–MnO₂ Battery

Nano Letters, Год журнала: 2021, Номер 21(3), С. 1446 - 1453

Опубликована: Янв. 20, 2021

Aqueous Zn-based batteries are attractive because of the low cost and high theoretical capacity Zn metal anode. However, developed so far utilize an excess amount (i.e., thick anode), which decreases energy density whole battery. Herein, we demonstrate anode-free design zero-excess Zn), is enabled by employing a nanocarbon nucleation layer. Electrochemical studies show that this allows for uniform electrodeposition with efficiency stability over range current densities plating capacities. Using configuration, showcase Zn–MnO2 battery prototype, showing 68.2% retention after 80 cycles. Our opens new direction implementing aqueous in storage systems.

Язык: Английский

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Porous MgCo2O4 nanoflakes serve as electrode materials for hybrid supercapacitors with excellent performance

Journal of Colloid and Interface Science, Год журнала: 2022, Номер 625, С. 925 - 935

Опубликована: Июнь 26, 2022

Язык: Английский

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Enhanced Reversible Zinc Ion Intercalation in Deficient Ammonium Vanadate for High-Performance Aqueous Zinc-Ion Battery

Nano-Micro Letters, Год журнала: 2021, Номер 13(1)

Опубликована: Апрель 30, 2021

Ammonium vanadate with bronze structure (NH

Язык: Английский

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Dual-doped carbon hollow nanospheres achieve boosted pseudocapacitive energy storage for aqueous zinc ion hybrid capacitors

Energy storage materials, Год журнала: 2021, Номер 42, С. 705 - 714

Опубликована: Авг. 15, 2021

Язык: Английский

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Building better aqueous Zn-organic batteries

Energy & Environmental Science, Год журнала: 2023, Номер 16(6), С. 2398 - 2431

Опубликована: Янв. 1, 2023

This is a systematic overview focusing on recent developments, energy storage mechanisms, and design improvement strategies for aqueous Zn-organic batteries.

Язык: Английский

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